The Cabinet Office says it'll take all necessary steps to protect information submitted in this month's census.
A Freedom of Information request asked about how the data would be shared, and processed.
In its response, the government said a Data Protection Impact Assessment had been carried out and the data would not be shared.
This year's interim census is due to get underway on Sunday, April 26.
Questions about unemployed 'NEETs' to be raised in Tynwald
Ferry ID checks may require new laws, says regulator
Seriously injured TT rider to return home
Future of sidecars to be raised in Tynwald
Advice about disinformation issued to election candidates
Government wants to hear about your experiences with weight
RNLI pays tribute to late volunteer's 40 years of service
Reinstating horse tram tracks to need special Tynwald vote